Tomioka Silk Mill Travel Guide

Tomioka Silk Mill UNESCO World Heritage Site in Gunma

Tomioka Silk Mill Complete Travel Guide

Tomioka Silk Mill is a UNESCO World Heritage Site in Gunma, a 19th-century brick and timber silk-reeling factory that played a key role in modernizing Japan's silk industry and connecting it to world trade.

Quick Facts

PricePaid. Adult admission is commonly listed around yen 1,000, with reduced rates for students and children.
Time needed1 to 1.5 hours to see the main buildings and exhibits.
Best timeWeekday mornings for smaller crowds; some sources list Wednesday as a closure day, so confirm before visiting.
Good forHistory and architecture fans, UNESCO World Heritage site collectors, and day-trippers from Tokyo.

Best Things to Do

  • See the Silk-reeling Plant and the East and West Cocoon Warehouses, built in a Japanese-Western brick style starting in 1872.
  • Learn about Japan's role in the global silk industry through the on-site exhibits.
  • Walk through the retro streets near the mill in Tomioka City.
  • Look into the discounted round-trip train plus admission ticket from Tokyo if traveling via the Joetsu Shinkansen.

Tickets and Fees

Checked in July 2026: adult admission is commonly listed around yen 1,000, with reduced rates for students and children. Some sources note the mill is closed on Wednesdays. Confirm the current price, hours, and closure day on the official site before visiting.

How to Get There

From Tokyo Station, take the Joetsu Shinkansen to Takasaki (about 50 minutes), then change to the Joshin Dentetsu line to Joshu-Tomioka Station (about 40 minutes) and walk roughly 15 minutes to the mill.

Nearby Attractions

Combine the visit with Ikaho Onsen for a relaxing finish to the day, or with Kusatsu Onsen if building a longer Gunma itinerary.

Book Before You Go

Use official information for opening hours and ticket rules, then book tours or tickets only when they fit your route.